Agile Scaling Model | Glossary

Definition:

The Agile Scaling Model (ASM) is a contextual framework for effective adoption and tailoring of agile practices to meet the unique challenges faced by a system delivery team of any size. The ASM distinguishes between three scaling categories Core agile development, Disciplined agile delivery and Agility at Scale.

Further Reading: Disciplined Agile Delivery by  Scott W. Ambler and Mark Lines.

Disciplined Agile Delivery | Glossary

Definition:

Disciplined agile delivery is a process decision framework that enables simplified process decisions around incremental and iterative solution delivery. DAD builds on the many practices espoused by advocates of agile software development, including Scrum, agile modeling, lean software development, and others.

Further Reading:

Book: Disciplined Agile Delivery  by Scott W. Ambler and Mark Lines.